My rabbits now live at my grandmother's house (I'm not going to get into why on here). Gus here in the past 2 weeks keeps turning over and dumping her litterbox, she still uses it but every afternoon when my grandmother checks on them she has it turned over and she has to keep refilling it. She has used this litterbox perfectly for about a year before that she didn't have a litterbox as the hutch has a drop pan but it's just easier for my grandmother to clean out the litterbox instead of the drop pan every week. I know it's not the best litterbox as its a corner one but if I were to put a bigger one in there she wouldn't have any room to hop around. Next fall they will both be coming with me to college and will have a much bigger area and litter box but for now I need to figure out why she is doing this. Nothing has changed in her environment, other than I recently sealed it off from the wind and a low wattage heat lamp is on it. I use wood pellets for litter and diet hasn't changed same bale of hay same bag of pellets. Why do you think she is doing this all of a sudden? When it was warmer my grandmother would put them in a playpen but now that it is colder they don't get out. Maybe she is mad cause she hasn't been out? But it has been at least a month since she has been out. I don't know guys, I'm really lost. Any ideas and advice would be appreciated.